/*
 * Copyright (c) 2012, Metron, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Metron, Inc. nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL METRON, INC. BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.metsci.glimpse.painter.info;

import com.metsci.glimpse.axis.Axis2D;
import com.metsci.glimpse.support.texture.FloatTextureProjected2D;

/**
 * In addition to displaying the coordinates of the cursor
 * in data space, also displays the data value stored in the
 * {@link com.metsci.glimpse.support.texture.FloatTextureProjected2D}
 * beneath the cursor location.
 *
 * @author ulman
 * @see CursorTextPainter
 */
public class CursorTextZPainter extends CursorTextPainter
{
    protected FloatTextureProjected2D texture;

    public void setTexture( FloatTextureProjected2D texture )
    {
        this.texture = texture;
    }

    @Override
    protected String getTextZ( Axis2D axis )
    {
        if ( texture != null )
        {
            double centerX = axis.getAxisX( ).getSelectionCenter( );
            double centerY = axis.getAxisY( ).getSelectionCenter( );

            return String.format( "z: %.2f", texture.getDataValue( centerX, centerY ) );
        }

        return null;
    }
}
